AWS Load Balancer Controller is a controller to help manage Elastic Load Balancers for a Kubernetes cluster.
When you create a Kubernetes ingress, an AWS Application Load Balancer (ALB) is provisioned that load balances application traffic. To learn more, see What is an Application Load Balancer? in the Application Load Balancers User Guide and Ingress in the Kubernetes documentation. ALBs can be used with pods that are deployed to nodes or to AWS Fargate. You can deploy an ALB to public or private subnets.
- Application Load Balancer - It satisfies Kubernetes Ingress resources by provisioning Application Load Balancers
- Network Load Balancer - It satisfies Kubernetes Service resources by provisioning Network Load Balancers.
- The following diagram details the AWS components this controller creates. It also demonstrates the route ingress traffic takes from the ALB to the Kubernetes cluster.
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: deployment-2048
spec:
selector:
matchLabels:
app.kubernetes.io/name: app-2048
replicas: 1
template:
metadata:
labels:
app.kubernetes.io/name: app-2048
spec:
containers:
- image: public.ecr.aws/l6m2t8p7/docker-2048:latest
imagePullPolicy: Always
name: app-2048
ports:
- containerPort: 80
---
apiVersion: v1
kind: Service
metadata:
name: service-2048
spec:
ports:
- port: 80
targetPort: 80
protocol: TCP
type: NodePort
selector:
app.kubernetes.io/name: app-2048
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-2048
annotations:
alb.ingress.kubernetes.io/scheme: internet-facing
alb.ingress.kubernetes.io/target-type: ip
spec:
ingressClassName: alb
rules:
- http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: service-2048
port:
number: 80
terraform >= 1.1
| Name | Version |
|---|---|
| aws | >= 3.0 |
| helm | >= 1.0 |
| kubernetes | >= 1.11 |
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| argocd | A set of values for enabling deployment through ArgoCD | map(string) |
{} |
no |
| cluster_name | The name of the cluster the charts will be deployed to | string |
n/a | yes |
| conf | A set of parameters to pass to Nginx Ingress Controller chart | map |
{} |
no |
| module_depends_on | A list of explicit dependencies for the module | list |
[] |
no |
| namespace | A name of the existing namespace | string |
"kube-system" |
no |
| namespace_name | A name of namespace for creating | string |
"external-dns" |
no |
| tags | A tags for attaching to new created AWS resources | map(string) |
{} |
no |
| vpc_id | An ID of the VPC | string |
"" |
yes |
| Name | Description |
|---|---|
| alb_ingress | ALB ingress resource |
This example demonstrates how you can use alb controller.
module "alb-ingress" {
depends_on = [module.argocd]
source = "github.com/provectus/sak-alb-controller"
cluster_name = module.eks.cluster_id
vpc_id = module.network.vpc_id
argocd = module.argocd.state
}
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